The ground EFX Storm series MX50 metal detector features a lightweight, easy-to-use frame. The digital backlit Interface is large and simple to use. This detector has 8 metal categories and adjustable discrimination plus 3 elimination modes all-metal, coin and jewelry. It can even detect quarter-sized coins up to 8 in. Away! the quick-release extension rod adds up to 14 in. Length. The MX50 requires 6 AA alkaline batteries (not included).